/* * ZeroTier One - Network Virtualization Everywhere * Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/ * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include "../node/Constants.hpp" #include "../node/Utils.hpp" #ifdef __UNIX_LIKE__ #include #include #include #include #include #include #include #include #include #endif #ifdef __WINDOWS__ #include #include #include #include #include #endif #include "OSUtils.hpp" namespace ZeroTier { #ifdef __UNIX_LIKE__ bool OSUtils::redirectUnixOutputs(const char *stdoutPath,const char *stderrPath) throw() { int fdout = ::open(stdoutPath,O_WRONLY|O_CREAT,0600); if (fdout > 0) { int fderr; if (stderrPath) { fderr = ::open(stderrPath,O_WRONLY|O_CREAT,0600); if (fderr <= 0) { ::close(fdout); return false; } } else fderr = fdout; ::close(STDOUT_FILENO); ::close(STDERR_FILENO); ::dup2(fdout,STDOUT_FILENO); ::dup2(fderr,STDERR_FILENO); return true; } return false; } #endif // __UNIX_LIKE__ std::vector OSUtils::listDirectory(const char *path) { std::vector r; #ifdef __WINDOWS__ HANDLE hFind; WIN32_FIND_DATAA ffd; if ((hFind = FindFirstFileA((std::string(path) + "\\*").c_str(),&ffd)) != INVALID_HANDLE_VALUE) { do { if ((strcmp(ffd.cFileName,"."))&&(strcmp(ffd.cFileName,".."))&&((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)) r.push_back(std::string(ffd.cFileName)); } while (FindNextFileA(hFind,&ffd)); FindClose(hFind); } #else struct dirent de; struct dirent *dptr; DIR *d = opendir(path); if (!d) return r; dptr = (struct dirent *)0; for(;;) { if (readdir_r(d,&de,&dptr)) break; if (dptr) { if ((strcmp(dptr->d_name,"."))&&(strcmp(dptr->d_name,".."))&&(dptr->d_type != DT_DIR)) r.push_back(std::string(dptr->d_name)); } else break; } closedir(d); #endif return r; } std::map OSUtils::listDirectoryFull(const char *path) { std::map r; #ifdef __WINDOWS__ HANDLE hFind; WIN32_FIND_DATAA ffd; if ((hFind = FindFirstFileA((std::string(path) + "\\*").c_str(),&ffd)) != INVALID_HANDLE_VALUE) { do { if ((strcmp(ffd.cFileName,"."))&&(strcmp(ffd.cFileName,".."))) { r[ffd.cFileName] = ((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) ? 'd' : 'f'; } } while (FindNextFileA(hFind,&ffd)); FindClose(hFind); } #else struct dirent de; struct dirent *dptr; DIR *d = opendir(path); if (!d) return r; dptr = (struct dirent *)0; for(;;) { if (readdir_r(d,&de,&dptr)) break; if (dptr) { if ((strcmp(dptr->d_name,"."))&&(strcmp(dptr->d_name,".."))) { r[dptr->d_name] = (dptr->d_type == DT_DIR) ? 'd' : 'f'; } } else break; } closedir(d); #endif return r; } bool OSUtils::rmDashRf(const char *path) { #ifdef __WINDOWS__ HANDLE hFind; WIN32_FIND_DATAA ffd; if ((hFind = FindFirstFileA((std::string(path) + "\\*").c_str(),&ffd)) != INVALID_HANDLE_VALUE) { do { if ((strcmp(ffd.cFileName,".") != 0)&&(strcmp(ffd.cFileName,"..") != 0)) { if ((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0) { if (DeleteFileA((std::string(path) + ZT_PATH_SEPARATOR_S + ffd.cFileName).c_str()) == FALSE) return false; } else { if (!rmDashRf((std::string(path) + ZT_PATH_SEPARATOR_S + ffd.cFileName).c_str())) return false; } } } while (FindNextFileA(hFind,&ffd)); FindClose(hFind); } return (RemoveDirectoryA(path) != FALSE); #else struct dirent de; struct dirent *dptr; DIR *d = opendir(path); if (!d) return true; dptr = (struct dirent *)0; for(;;) { if (readdir_r(d,&de,&dptr) != 0) break; if (!dptr) break; if ((strcmp(dptr->d_name,".") != 0)&&(strcmp(dptr->d_name,"..") != 0)&&(strlen(dptr->d_name) > 0)) { std::string p(path); p.push_back(ZT_PATH_SEPARATOR); p.append(dptr->d_name); if (unlink(p.c_str()) != 0) { // unlink first will remove symlinks instead of recursing them if (!rmDashRf(p.c_str())) return false; } } } closedir(d); return (rmdir(path) == 0); #endif } void OSUtils::lockDownFile(const char *path,bool isDir) { #ifdef __UNIX_LIKE__ chmod(path,isDir ? 0700 : 0600); #else #ifdef __WINDOWS__ { STARTUPINFOA startupInfo; PROCESS_INFORMATION processInfo; startupInfo.cb = sizeof(startupInfo); memset(&startupInfo,0,sizeof(STARTUPINFOA)); memset(&processInfo,0,sizeof(PROCESS_INFORMATION)); if (CreateProcessA(NULL,(LPSTR)(std::string("C:\\Windows\\System32\\icacls.exe \"") + path + "\" /inheritance:d /Q").c_str(),NULL,NULL,FALSE,CREATE_NO_WINDOW,NULL,NULL,&startupInfo,&processInfo)) { WaitForSingleObject(processInfo.hProcess,INFINITE); CloseHandle(processInfo.hProcess); CloseHandle(processInfo.hThread); } startupInfo.cb = sizeof(startupInfo); memset(&startupInfo,0,sizeof(STARTUPINFOA)); memset(&processInfo,0,sizeof(PROCESS_INFORMATION)); if (CreateProcessA(NULL,(LPSTR)(std::string("C:\\Windows\\System32\\icacls.exe \"") + path + "\" /remove *S-1-5-32-545 /Q").c_str(),NULL,NULL,FALSE,CREATE_NO_WINDOW,NULL,NULL,&startupInfo,&processInfo)) { WaitForSingleObject(processInfo.hProcess,INFINITE); CloseHandle(processInfo.hProcess); CloseHandle(processInfo.hThread); } } #endif #endif } uint64_t OSUtils::getLastModified(const char *path) { struct stat s; if (stat(path,&s)) return 0; return (((uint64_t)s.st_mtime) * 1000ULL); } bool OSUtils::fileExists(const char *path,bool followLinks) { struct stat s; #ifdef __UNIX_LIKE__ if (!followLinks) return (lstat(path,&s) == 0); #endif return (stat(path,&s) == 0); } int64_t OSUtils::getFileSize(const char *path) { struct stat s; if (stat(path,&s)) return -1; #ifdef __WINDOWS__ return s.st_size; #else if (S_ISREG(s.st_mode)) return s.st_size; #endif return -1; } std::vector OSUtils::resolve(const char *name) { std::vector r; std::vector::iterator i; InetAddress tmp; struct addrinfo *ai = (struct addrinfo *)0,*p; if (!getaddrinfo(name,(const char *)0,(const struct addrinfo *)0,&ai)) { try { p = ai; while (p) { if ((p->ai_addr)&&((p->ai_addr->sa_family == AF_INET)||(p->ai_addr->sa_family == AF_INET6))) { tmp = *(p->ai_addr); for(i=r.begin();i!=r.end();++i) { if (i->ipsEqual(tmp)) goto skip_add_inetaddr; } r.push_back(tmp); } skip_add_inetaddr: p = p->ai_next; } } catch ( ... ) {} freeaddrinfo(ai); } std::sort(r.begin(),r.end()); return r; } bool OSUtils::readFile(const char *path,std::string &buf) { char tmp[1024]; FILE *f = fopen(path,"rb"); if (f) { for(;;) { long n = (long)fread(tmp,1,sizeof(tmp),f); if (n > 0) buf.append(tmp,n); else break; } fclose(f); return true; } return false; } bool OSUtils::writeFile(const char *path,const void *buf,unsigned int len) { FILE *f = fopen(path,"wb"); if (f) { if ((long)fwrite(buf,1,len,f) != (long)len) { fclose(f); return false; } else { fclose(f); return true; } } return false; } std::vector OSUtils::split(const char *s,const char *const sep,const char *esc,const char *quot) { std::vector fields; std::string buf; if (!esc) esc = ""; if (!quot) quot = ""; bool escapeState = false; char quoteState = 0; while (*s) { if (escapeState) { escapeState = false; buf.push_back(*s); } else if (quoteState) { if (*s == quoteState) { quoteState = 0; fields.push_back(buf); buf.clear(); } else buf.push_back(*s); } else { const char *quotTmp; if (strchr(esc,*s)) escapeState = true; else if ((buf.size() <= 0)&&((quotTmp = strchr(quot,*s)))) quoteState = *quotTmp; else if (strchr(sep,*s)) { if (buf.size() > 0) { fields.push_back(buf); buf.clear(); } // else skip runs of seperators } else buf.push_back(*s); } ++s; } if (buf.size()) fields.push_back(buf); return fields; } std::string OSUtils::platformDefaultHomePath() { #ifdef __UNIX_LIKE__ #ifdef __APPLE__ // /Library/... on Apple return std::string("/Library/Application Support/ZeroTier/One"); #else #ifdef __BSD__ // BSD likes /var/db instead of /var/lib return std::string("/var/db/zerotier-one"); #else // Use /var/lib for Linux and other *nix return std::string("/var/lib/zerotier-one"); #endif #endif #else // not __UNIX_LIKE__ #ifdef __WINDOWS__ // Look up app data folder on Windows, e.g. C:\ProgramData\... char buf[16384]; if (SUCCEEDED(SHGetFolderPathA(NULL,CSIDL_COMMON_APPDATA,NULL,0,buf))) return (std::string(buf) + "\\ZeroTier\\One"); else return std::string("C:\\ZeroTier\\One"); #else return (std::string(ZT_PATH_SEPARATOR_S) + "ZeroTier" + ZT_PATH_SEPARATOR_S + "One"); // UNKNOWN PLATFORM #endif #endif // __UNIX_LIKE__ or not... } // Inline these massive JSON operations in one place only to reduce binary footprint and compile time nlohmann::json OSUtils::jsonParse(const std::string &buf) { return nlohmann::json::parse(buf); } std::string OSUtils::jsonDump(const nlohmann::json &j) { return j.dump(1); } uint64_t OSUtils::jsonInt(const nlohmann::json &jv,const uint64_t dfl) { try { if (jv.is_number()) { return (uint64_t)jv; } else if (jv.is_string()) { std::string s = jv; return Utils::strToU64(s.c_str()); } else if (jv.is_boolean()) { return ((bool)jv ? 1ULL : 0ULL); } } catch ( ... ) {} return dfl; } bool OSUtils::jsonBool(const nlohmann::json &jv,const bool dfl) { try { if (jv.is_boolean()) { return (bool)jv; } else if (jv.is_number()) { return ((uint64_t)jv > 0ULL); } else if (jv.is_string()) { std::string s = jv; if (s.length() > 0) { switch(s[0]) { case 't': case 'T': case '1': return true; } } return false; } } catch ( ... ) {} return dfl; } std::string OSUtils::jsonString(const nlohmann::json &jv,const char *dfl) { try { if (jv.is_string()) { return jv; } else if (jv.is_number()) { char tmp[64]; Utils::snprintf(tmp,sizeof(tmp),"%llu",(uint64_t)jv); return tmp; } else if (jv.is_boolean()) { return ((bool)jv ? std::string("1") : std::string("0")); } } catch ( ... ) {} return std::string((dfl) ? dfl : ""); } std::string OSUtils::jsonBinFromHex(const nlohmann::json &jv) { std::string s(jsonString(jv,"")); if (s.length() > 0) { char *buf = new char[(s.length() / 2) + 1]; try { unsigned int l = Utils::unhex(s,buf,(unsigned int)s.length()); std::string b(buf,l); delete [] buf; return b; } catch ( ... ) { delete [] buf; } } return std::string(); } // Used to convert HTTP header names to ASCII lower case const unsigned char OSUtils::TOLOWER_TABLE[256] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, ' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff }; } // namespace ZeroTier